Bobbin carrier for braiding machines



Oct. 5, 1937. R. A. sl-:GER 2,094,756

BOBBIN CARRIER FOR BRAIDING MACHINES 2 Sheets-Sheet 1 Filed July 17, 1935 Z8 INVENTOR.

Raaf/W' 5565/?.

ATTORNEYS.

ctf 5, 1937. R A, SEGER 2,094,756

BOBBIN CARRIER FOR BRAIDING MACHINES Filed July'l'l, 193s 2 'sheets-sheet! 2 INVENTOR. /FoE/fr /Z 5665/?,

ATTORNEY.

Patented Oct. 5, 1937 ATE BOBBIN CARRIER Fon BRAIDING MACHINES Y Robert A. Seger, Louisville, Ky.

Application July 17, 1936, Serial No. 91,045

Claims.

This invention relates to a machine for braiding solid cord, such as window sash cord, clotheslines, trolley cords or any other non-kinkable rope wherein the threads are braided. It is also applicable to the braiding of fishing lines, shoe strings, wire insulation and the like.

As is well understood in the art, such machines are provided with horizontally rotating plates carrying a plurality of bobbins vertically and rotatably disposed thereon, which in turn carry the l0 threads to be braided in forming cord or the like.

Such carriers are so formed as to rotatably support the bobbins in vertical position and carry them in an irregular but generally circular path usually in a clockwise direction about the machine and central strand, if any, which passes upwardly therethrough, one carrier being caused to pass inwardly about the two preceding carriers while they remain stationary so that the thread will pass under the two preceding threads, whereby 4a series of lock stitches will be formed. As

the lock stitches are formed about the central thread,.if any, they are drawn therewith through a former, the function of which is to permit the desired tension on the thread to be maintained, thus providing an evenly braided cord.

The invention resides` in mounting a check or steadying member on the braiding machine in association with the carrier and bobbin mounted thereon. Due to the looseness of the carrier mounting in respect to the table, particularly after wear and in operating at high speeds, there is a forward thrust or movement of the carrier occurring as it is s et out on the plate. This results in a reciprocating movement of the bobbin and also causes some backlash which results vin kinking of the yarn and other `undesirable actions. It is, therefore, the purpose of this invention to provide such a check and steadying f member in the form of a rubber or spring guard for minimizing or substantially eliminating the undue thrust of the carrier occurring as it is set out on the plate. Such check steadies the carrier at this point and frictionally resists any 51 backlash movement, thereby preventing kinking of the yarn or undue stretching and releasing thereof.

The full nature of the invention will be understood from the accompanying drawings and 50 the following description and claims:

Fig. 1 is a front elevation of the carrier in operating position. Fig. 2 is a partial illustration thereof shown in inoperative position. Fig. 3 is the same as Fig. 1, showing a side elevation. Fig.

Y55 4 is the same as Fig. 3 showinga central vertical section therethrough. Fig. 5 is a fragmental front View showing the aperture and groove with the spring broken away. Fig.,6 is a plan View of the braiding machine table indicating diagrammatically one position of the bobbins. Fig. 7 is a side elevation taken on the line 'l-'I of Fig. 6.

In the drawings there is shown a bobbin carrier supported for operation in the usual manner well known in the art by a cord braiding machine having a center plate IU, internal gear II and a O top plate I2, the center and top plates being provided with their usual cam grooves for moving the several carriers mounted thereon relative to each other for effecting the braiding operation.

The carrier is L-shaped having a supporting base I3 slidably mounted upon the upper surface of the top plate I2. Said base is connected to a ilange I4 spaced from the underside of the top plate by a cam member I5 operating in the cam grooves of the top plate I 2. Extending downwardly through the internal gear II, there is a spindle I6 having aflange I'I and a cam member I8 extending downwardly therefrom into the cam grooves of the center plate Ill. Thus, as the plates IU and I2 are rotated in the operation of the machine, the cam members I5 and I 8 will cause the carrier to travel in the desired braiding relation with the other carriers.

Extending upwardly from the base I3 there is a bobbin carrying spindle I9, which carries the bobbin 20 with the usual upper and lower end disks ZI between which the thread 212 is wound. Formed integrally with the base I3 and extending upwardly vertically therefrom to yone side of the spindle I9 and so spaced as to clear the bottom, there is a, standard 23 having a passage 24 formed therein through which the thread is drawn, said passage communicating with an upwardly extendingV-shaped groove 25 for guiding the thread in its upward direction and freely permittingl the passage through it of any knots in the thread. At the upper end of the standard there is an apertured barrel 2t for feeding the thread directly from the carrier to the former on the machine.

Intermediate the passage 24 and barrel 26, there are in-and-out passages 24a and 24h formed in the standard 23, said passages being smoothed and rounded for providing frictional resistance to the. passage of the thread therethrough, but having no sharp corners or edges such as would interfere with the passage of knots or cause any undue wear or strain upon the yarn.

Mounted upon the outer face of the standard 23 there is a at bowed sheet metal spring 21 Cil the tautness of the thread passing through the barrel 26 to the former-of the machine.

The carriage is provided with a safety device construction and gravity actuated throwout mem,- ber 3% slidably mounted upon the standard, provided with a U-shaped wire hanger 3i which eX- tends upwardly and under thethread so that the tautness of the thread between the former and in the art.

By reason of this construction, the carrier, so far as the threading thereof, spring and weight attachments, and ratchet-release mechanism are concerned, is greatly simplied. The resistance to the movement of the thread for maintaining 1 the desired tautness and eliminating any slack Vcc is entirely controlled by the tension of the spring 21 which is adjustableV so that any amount of resistance. and tautness may be readily obtained.

Furthermore, the resistance to the passage of Y the thread and its tautness is constant, as distinguished'from intermittent as heretofore, and the character of the resistance, and particularly the arrangement of the several apertures, readily permits ofany knots in the thread passing therethrough, und-er the spring 2l and through the barrel without danger of fouling'and breaking.

As illustrated in Fig.' 6, the braiding machine is provided with twelve carriers. of the carriers illustrated therein, certainV pairs are positioned at the set out point, or the extreme outer position. In the rapid rotation of thermachine, the action ,is such that the carriers and the bobbins supported thereon are thrust with substantial force into the setV out position, which results in a rocking action occurring due to looseness between-the Ybase portion ofthe carrier and the cam slots and supporting surfaces of the machine. Unless restrained, this rockingV or thrust action has the effect of causing backlash,V as well as stresses and strains upon the'Y yarn. For restraining the bobbins at'their'respective set out points, there is providedfa resilient V.band 32 extending about the Vperiphery of rthe machine and supported upon the rollers 33 mounted on spindles 341 which are lbolted upon the projection 35 extending radially from the Xed marginal plate V3B of the machine. This band may be, in the Aform of heavy rubber or spring material such in thej position as will give with the Vimpact of the bobbin when the carrier reaches the extreme set out point,

but which, by its tension, will restrain and steady Vthe bobbin and carrier and frictionally resist rotation thereof to prevent backlash. By this means, freedom of movement of the bobbin Yand carrier is'permitted while thrust or rocking and backlash are prevented or reduced to a minimum of action, such as will avoid kinking,` and undue stretching and releasing.

rIrhe invention claimed is: Y Y 1 1. A braiding machine including a plurality of carriers, each being adapted to receive a thread carrying bobbin,',a support, means on said "machine forV moving-said carriers to different positions Von said support for effecting the braiding of the thread carried by the'bobbins,V and means on said supportfor resisting rocking movement of the carriers and their respective bobbins upon being moved to'their extreme set out positions.Y

2. A braiding machine'including'a plurality of carriers, each being adapted to receive a thread carrying bobbin, a support,means on said machine for moving said carriers to` different Ypositions on said support for Yeffecting the braiding of the thread carried by the bobbins, and means on said support Vadapted to be engaged bythe bobbin for yieldingly resisting outward thrust thereof and rictionally resisting rotary movement.

V3. A braiding machine including a plurality of carriers, eachbeing adapted to receivefa thread carrying bobbin, means on saidmachine for moving said carriers to diiierent positions for effecting the braiding of the thread carried by the bobbins, and means for frictionally and yieldingly engaging the Ybobbin upon the bobbin being moved to its extreme set out position for steadying the carrier and preventing rocking action while resisting free rotation of the bobbin.

4. .A braiding machine including a pluralityrof carriers, each vbeing adapted to receive a thread carrying; bobbin, means onV said machine for movingr Vsaidfcarriers to different-positions for effecting the braiding of` the thread carried by the bobbins, and aV band oi-yielding material'extendingabont said machinein position to be engagedby the respective bobbinsV upon their being' moved Yto extreme set outY position for resisting undue rocking movement thereof and preventing backlash. Y

5. A braiding machine includingV aplurality ofv carriers, each 'being adapted toreceive Va thread carryingbobbin, means on said machineA for moving said carriersV to; different positions for bobbins, a plurality ofy supports spacedabout the periphery or said machine and secured thereto,

and-a resilient'ban'd carried by said supports so fas toV extend tangentially to therrotary movement eiecting the braiding of the threadcarried by the- Y 

